django - Django user-to-groups in userAdmin, and group-to-users in groupAdmin

Question

Is it possible to have many-to-many widget in admin-panel in user-tab to pick groups, that user belong to, and similar many-to-many widget in group-tab to pick users, which should belong to that group?

Answer 1

有简单的方法和困难的方法。

简单的方法是使用 Django 的InlineModelAdmin对象。但是，这种方式不能使用组小部件。

from django.contrib.auth.admin import GroupAdmin
from django.contrib.auth.models import User, Group

class UserSetInline(admin.TabularInline):
    model = User.groups.through
    raw_id_fields = ('user',)  # optional, if you have too many users

class MyGroupAdmin(GroupAdmin):
    inlines = [UserSetInline]

# unregister and register again
admin.site.unregister(Group)
admin.site.register(Group, MyGroupAdmin)

困难的方式需要您构建自己的表单，手动加载和保存相关用户：

from django import forms
from django.contrib import admin
from django.contrib.auth.admin import GroupAdmin
from django.contrib.auth.models import User, Group

class GroupForm(forms.ModelForm):
    users = forms.ModelMultipleChoiceField(
        label='Users',
        queryset=User.objects.all(),
        required=False,
        widget=admin.widgets.FilteredSelectMultiple(
            "users", is_stacked=False))

    class Meta:
        model = Group
        exclude = ()  # since Django 1.8 this is needed
        widgets = {
            'permissions': admin.widgets.FilteredSelectMultiple(
                "permissions", is_stacked=False),
        }


class MyGroupAdmin(GroupAdmin):
    form = GroupForm

    def save_model(self, request, obj, form, change):
        # save first to obtain id
        super(GroupAdmin, self).save_model(request, obj, form, change)
        obj.user_set.clear()
        for user in form.cleaned_data['users']:
             obj.user_set.add(user)

    def get_form(self, request, obj=None, **kwargs):
        if obj:
            self.form.base_fields['users'].initial = [o.pk for o in obj.user_set.all()]
        else:
            self.form.base_fields['users'].initial = []
        return GroupForm

# unregister and register again
admin.site.unregister(Group)
admin.site.register(Group, MyGroupAdmin)